Switch mechanism



Brown, BY

J. M. BROWN SWITCH MECHANISM Filed March lO,

Aug. 25, 1931 WITNESSES:

Aug- 25, 1931- J. M. BROWN 1,820,691

SWITCH MECHANISM Filed March lO, 1927 2 Sheets-Sheet 2 WITNESSES:INVENTOR James M .BrownJ BY Jane D BrownY/dnsrarix ATTORNEY 10 turedivided` into cells PatentedA Aug. 25, 1931 UNiTED STATES PATENT OFFICEJAMES EEERCWN, DECEASED, LATE oE PITTSBURGH, PENNSYLVANIA, EY JANE D.BROWN, ALMINISTRATRIX, or PITTSBURGH, PENNSYLVANIA, AssIGNoR To WEST-INGRoUsE ELECTRIC AND MANUFACTURING COMPANY, A CoRroRATIoN E TENN-SYLVANIA SWITCH MECHANISM i Application ined Karen 1o, 1927. seriai No.174,109.

The invention relates to switch mechanisms and particularly to switch.mechanisms of the iron-clad draw-out type.

One object of the invention is to provide 5 a switch mechanismlcomprising a compoundiilled stationary structure in which busbars,conductors and other live parts are dicposed, a stationary cellstructure adapted to cooperate with tie compound-filled strucforseparately disposing a plurality of circuit breakers, voltagetransformers and ,otherl well known switch gear that shall cooperatewith the us bars and conductois disposed in the compound-lled structure.j

Another object of the invention is to provide a switch mechanismcomprising a compound-filled structure divided-into a plurality ofseparate filled casings wherein the l0 "different phases of thecircuit'are individually disposed, a stationary cell structureassociated with the compound-filled structure having a plurality `ofcells for'sep- .arately disposing single-pole circuit breakliers thatshall cooperatewith the respective conductors and bus bars of thedifferent phases. y

Another object of the invention is to pro- .vide a switch mechanismcomprising a plu- "vality of stationary cells having single-pole circuitbreaker disposed in each cell in sideby-side relation, a structurecomprising a plurality of compound-filled compartments, .v eachcompartment having a bus bar disposed in parallel vertical relation,anda plurality ofLcoIiipound-'filled risers having conductors thereinextending upwardly unequal distances.' from a common base forcooperation mwith the several bus-bar compartments, the 40 risers havingrecesses therein for disposing terminals permanently connected to theconductors that are intended to cooperateV with the respective circuitbreakers.V

Heretofore, it has been the practice, in

certain constructions of the iron-clad drawout type switch mechanisms,to provide a compound-filled Compartment for the bus bars of all phasesAcfa-circuit. It has been found in practice, however, -that it oftenhappens that a short-circuit 0r other trouble ,for

developing in one phase is transmitted to one or more of the otherphases disposed in the .saine compound-filled compartment and there Ahasbeen, accordingly, provided a switch stiucture for isolating each phase,whereby the compartment containing the bus bar or conductor of thedefective phase may be removed from the mechanism and a new onesubstituted, thereby aifording protection t'o the other phases, andgreatly reducing the cost of repairs.

The foregoing and other objects will become apparent-- throughout thefollowing description of the invention, as embodied in the apparatushereinafter described, and illustrated in the accompanying drawings,wherein,

Figure 1 is a rear View, in elevation, of a switch mechanism embodyingthe invention.

Fig. 2 is a sectional view taken along the line II-II of Fig. 1 and Fig.3 is a front elevational view, partly in section, of a switch mechanismembodying the invention.

In practicing the invention, a draw-out type switch mechanism 11 for apolyphase system is provided comprising a single-pole circuit breaker 12for each phase of the system, and a metal wall 13 arranged so that eachcircuit breaker is enclosed within its individual cell. The cells forthe various line phasesare located side by side and have openings 14 iiithe rear walls 15 thereof through which the disconnecting contactmembers 1G of the circuit breakers 12 extend. Horizontal bus bars 17,individual to the various line phases, are arranged above the enclosures13, each within a casing 18 preferably 0f non-magnetic metal filled withinsulating compound 19. There has been further provided a verticalconduit 21 also preferably of non-magnetic metal communicating with eachof the different casings 18, the conduits 21 having recesses 22 in theface adjacent the enclosure 13 and registering with the openings 14 inthe rear walls 15 thereof. The recesses 22 are provided with permanentcontact members 23 engaging the disconnecting-contact members 16 whenthe circuit breaker 12 is f `upwardly unequal in its operative positionWithin thc enclosure 13. A conductor 24 Within each conduit 21 connectsa contact member 23 therein with its proper bus bar 17. The said conduit21 is filled with vinsulating compound 25.

Referring to the drawings, a group of ein cuit breakers 12 controllingthe different phases of a single branch circuit is mounted on asupporting member 26. The su )portingmember 26v vis `'provided Wit-hwhee s 2T which cooperate with a portion 28 of the frame Work of theenclosures 13 for moving the circuit breakers into and out of engagenient With the permanent contact membersl 23.

Such. movement oithe circuit breakers een, however, take place only whentheir contests are open since the; Circuit breakers are prevented frommovement towards or `away from the permanent Contact members when.. thebreaker Contests are in Closed posi-V tion by interlocking ineens (notshown),

There has provided also .spaces in the lowest portions of theenclosures,- 13 to eontain current; and voltage transformers 31 andopenings 1 4 are provided in the rear Walls of the enclosures throughrhieh the diseonneetingronteet inenibers 16. et the Current end voltagetransformers extend., The openings 1 4 issue into recesses 22;eontaining terminals 2.3 of the risers 2.4E By this arrangement, it Willbe seen that the` Current and voltage transformers 31 are oon..- neotedto their proper oonduetors 24. The .current and voltage transformers.3.1 are mounted on Wheels which run upon a track on the freine Work ofthe enclosures 13, se that the disconnecting-Contaot ineinbcrs 16 of thecurrent andV Voltage transf foi-mers 3l moybe more@ readily into and outof engagement with the oorresponding permanent terminals 23s.

The current, and Voltage transformers, are prevented from movementtoward or away from the permanent Contact mei-libere when the breakereontset-s are in Closed position by interlocking means (not Shown).

The bus bar oasings 18 are disposed in Vertical relation above theenclosures 13, each easing being adapted to be removed withoutvinterference with the other @usines for .Substitution or repair.

The` risers 21 are separately disposed and spaced apart in parallelrelation and extend distonees. from a Common base for cooperating withtheir respective bus-bar oasings 1.8.-. The risers 21 are XeCl totheoasings' ,18 by any suitable ineens that will forni an oilftight 'joint-The feces 34 of the risers 21ers provilel with openings 35, andy thefaces 36 of the outings 18 are PlOViCleCl With Openings 37 registeringthe openings in the fases 34 of the risers 'for permittingthe conductors24; to con.- neet with their respeotve bus bars lI,

The risers 21 enclosing the conductors 24 terminate at the bottom o theswitch mechanism 11 at a common pot head 38, as shown in Figure l.

Accordingly, there has been provided 11 switch mechanism of theiron-clad drawout type in which the bus bars and conductors of eachphase of a polyphase circuit are separately enclosed in a separatecompound-filled structure, each structure beingr adapted to be removedWithout interference with the other structures and, by means of theseparate enclosure, protection is afforded the adjacent busy barscandrepairs thereto are greatly reduced.

While there has been illustrated and de-v scribed hutone. embodiment ofthe invention, it Will be apparent to. thosek skilled in the art thatcertain changes, modifico? tions, substitutions, additions and omissionsmay be made in the mechanism above described without departing from thespirit and scope. of the appended claims` The invent-ion claimed is:

l.. A draW-out-type switch mechanism for a polyphase system comprisingAa single.- pole. oireuitbreaker for each phase of the system, useperate metal enclosure for each eireuit breaker, arranged in siderby-.side relation and having openings in the rear Walls thereofthrough Whioh the disconnecting, contest members of the cirouit breakerex. tend, holiiontul bus bars arranged above the enelosuree, easingssurrounding the bus balislled with insulating compound, a ver ticalconduitfor eomnlunicating with each enclosure having recesses in theface adjacent the enclosure and registering with the open? ings in therear wells thereof and provided with permanent eontaet members disposedWrthui the reoesses for engaging the diseonf neoting-contact memberswhen the circuit breaker is in its operative position Within theenclosure, and e eonduoter within eaoh Conduit fer eonneeting eoontootmember therein with its proper bus ber, the sind Conduit beingfilled with insulating oompounfll A switeh structure Comprising e CellOP eueleslnge hdly movable Circuit breaker haring e disoonneet .eentaotprojecting therefrom, therein aligned. Conduit haring provided with withthe said contact, amain a main bus bar therein and an opening in a sidewall the cell hating an opening thereof, e brauen @enduit having auopening registering With. that in the oell, u ref cessedclosure for theopening in the branch Conduit e eonteot. terminal supported therein, abranch bus but Connected to the con-V tagt tepnnnal andprojecting fromanother opening in the branch conduit and projectme therefrom intoengagement with the main bus when the branch conduit is 111uneretire'position, the seid conduit serv` ing to close the saidopeningsin the cell and main conduit and support the Contact member in alignmentWith the said disconneet Contaot, whereby the latter may engage theContact terminal when the circuit breaker is moved into o erativeposition.

In testimony Whereo I have hereunto subscribed my name this 5th day ofMarch,

1927. JANE D. BROWN,

Admin/stmtm'w 0f the Estate of James M.

Brown, Deceased.

